Minecraft creature with throwing potions throws me off and I hit it all the time but doesn't die what is it and what can I do about it?

I was playing Minecraft and suddenly I was hit by a trough and I was poisoned and then someone like that threw. I tried to kill it but it didn't matter how fornicate it hit what is it and what can I do?

That's a witch. If you are new to the world you should see it again if you are not playing with mods.

That was probably a witch.

And it can heal itself too. So to kill them you have to be very skillful.

That's a witch who can heal themselves.

Witch, heals itself. Still not difficult to defeat, you just have to keep attacking her.